#1042014 bugs.debian.org: link rel=canonical has href="<a href="bugreport.cgi?bug=1034000">1034000</a>", breaks embeds (should have URL)

Package:
bugs.debian.org
Source:
bugs.debian.org
Submitter:
наб
Date:
2023-07-25 18:39:04 UTC
Severity:
normal
#1042014#5
Date:
2023-07-25 18:36:34 UTC
From:
To:
Dear Maintainer,

$ curl -L 'https://bugs.debian.org/1034000' | grep 'link rel=.*canonical'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   307  100   307    0     0    604      0 --:--:-- --:--:-- --:--:--   604
100 77888    0 77888    0     0  23799      0 --:--:--  0:00:03 --:--:-- 44154
<link rel="canonical" href="<a href="bugreport.cgi?bug=1034000">1034000</a>">

Which yields to "link cards" on, for example, mastodon, linking to
https://bugs.debian.org/cgi-bin/<a href="bugreport.cgi?bug=1034000">1034000</a>

Unclear to me how this happens, since
  templates/en_US/cgi/bugreport.tx:<link rel="canonical" href="<: $bug.url :>">
and
  $ git grep '$bug.url'
  templates/en_US/cgi/bugreport.tx:<link rel="canonical" href="<: $bug.url :>">
  templates/en_US/cgi/bugreport.tx:    <span><a href="<: $bug.url :>">Full log</a></span>
  templates/en_US/cgi/bugreport_buginfo.tx:                <a href="<: $bug.url :>"><: $bug.subject -:></a>
  templates/en_US/cgi/bugreport_buginfo.tx:                <a href="<: $bug.url :>"><: $bug.subject -:></a>
  templates/en_US/cgi/short_bug_status.tx:<a href="<: $bug.url :>"<:$bug.is_done?' style="text-decoration:line-through"':'':>>#
  templates/en_US/cgi/short_bug_status.tx:    <a href="<: $bug.url :>"<:$bug.is_done?' style="text-decoration:line-through"':'':>>#<: $bug.bug :></a>
  templates/en_US/cgi/short_bug_status.tx:        <a href="<: $bug.url :>"><: $bug.subject :></a>
so it Should Work(?) or other links on the site would also be broken.

Can't chase this further, soz.
This supersedes https://github.com/mastodon/mastodon/issues/26169.

Best,
наб